Hi Harold,

Yep, sounds logical. Anyway I am peeking at the resulting assembler code
that picbasic pro compiler outputs, and I can see an include to a
PBPPIC14.LIB file. 

Inside that file there are TONS of assembler routines that cope with all the
macro calls in my compiled .asm file.

In particular there is one LCDOUT, which amongst other things it initializes
the LCD for the first time.

It goes something like this:

Wait 15 ms
Send a 33h to Lcd to init
Wait 5 ms
Send init again
Wait 100 us
Send init one more time
Wait 100 us

Set 4 bit mode sending a 22h to lcd

Set 4-bit mode, 2+ lines, 5x7 font sending a 28h
Display on, no cursor, no blink sending a 0Ch
Lcd entry mode set, increment, no shift sending a 06h

...

Well ... this does not work with this lcd... I'll dig a bit more. Thanks for
all the hints. I will reread the 44780 datasheet and try to figure out if
that init routine is ok.

Regards,

Enrique


-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of
Harold Hallikainen
Sent: Lunes, 27 de Noviembre de 2006 12:31 p.m.
To: Microcontroller discussion list - Public.
Subject: Re: 16F690 & LCD: Newbie question


It doesn't appear that you are initializing the LCD controller at all.
There's a sequence that needs to be gone through. I've only done the 8 bit
sequence, though. The "black squares on top line" is the classic "not
initialized" indication from the LCD.

Harold


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